AttributeError: 'SimpleContainer' object has no attribute 'build'

[seltmann@…]

After a fresh installed trac and revtree-plugin i've got this error after clicking on 'Revtree'

How to Reproduce

While doing a GET operation on /revtree, Trac issued an internal error.

(please provide additional details here)

User Agent was: Mozilla/5.0 (X11; U; Linux i686; de; rv:1.9.0.9) Gecko/2009050519 Iceweasel/3.0.9 (Debian-3.0.9-1)

System Information

Trac	0.11.1
Python	2.5.2 (r252:60911, Jan 4 2009, 18:00:02) [GCC 4.3.2]
setuptools	0.6c8
SQLite	3.5.9
pysqlite	2.4.1
Genshi	0.5.1
mod_python	3.3.1
Pygments	0.10
Subversion	1.5.1 (r32289)
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/trac/web/main.py", line 423, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.5/site-packages/trac/web/main.py", line 197, in dispatch
    resp = chosen_handler.process_request(req)
  File "build/bdist.linux-i686/egg/revtree/web_ui.py", line 246, in process_request
    return self._process_revtree(req)
  File "build/bdist.linux-i686/egg/revtree/web_ui.py", line 337, in _process_revtree
    svgrevtree.build()
  File "build/bdist.linux-i686/egg/revtree/svgview.py", line 1008, in build
    map(lambda e: e.build(), self._addons)
  File "build/bdist.linux-i686/egg/revtree/svgview.py", line 1008, in <lambda>
    map(lambda e: e.build(), self._addons)
AttributeError: 'SimpleContainer' object has no attribute 'build'

[Emmanuel Blot]

Have you installed the MergeEnhancer plugin?

Try disabling it to see if you can reproduce the error.

[seltmann@…]

Replying to eblot:

Have you installed the MergeEnhancer plugin?

yes i have

Try disabling it to see if you can reproduce the error.

after disabling it the error disappears

[Emmanuel Blot]

Replying to seltmann@digitalzone.de:

Have you installed the MergeEnhancer plugin?

yes i have

I'm afraid this MergeEnhancer plugin has not been maintained and is not compliant with the latest releases of the RevtreePlugin. Are you using the svnmerge.py script?

[seltmann@…]

Replying to eblot:

I'm afraid this MergeEnhancer plugin has not been maintained and is not compliant with the latest releases of the RevtreePlugin.

ok. since i don't need it i can disable it.

Are you using the svnmerge.py script?

no, i don't

i just want to use the revtree plugin with subversion 1.5 and its mergeinfo property. did i understand it right that no hookscripts are needed for this to work? and what is meant with the Statement "For now, it only deals with global merge operations. "?